Removed trailing spaces in the most relevant files

Command used for the job:
egrep -rl ' $' --include *.c --include *.h --include  *.s --include  *.inc --include  *.txt *  | xargs sed -i 's/\s\+$//g'

Credits to Grant Murphy from Stack Overflow.

src/pokedex.c

@@ -5235,7 +5235,7 @@ void SetSearchRectHighlight(u8 flags, u8 x, u8 y, u8 width)
         temp &= 0x0fff;
         temp |= (flags << 12);
         *(u16 *)(ptr + (y + 0) * 64 + (x + i) * 2) = temp;
-        
+
         temp = *(u16 *)(ptr + (y + 1) * 64 + (x + i) * 2);
         temp &= 0x0fff;
         temp |= (flags << 12);